Thanks for your thoughts guys, I appreciate it.
I thought long and hard about this and spoke to my family who themselves had stories to tell about this particular bank. I won't name and shame but they had noticed the service declining and their local branches being cut every year, etc. They themselves were thinking of switching banks.
With their comments in mind also I decided to close it down, my folks are arranging the return of my money to my UK bank. The US bank refused to send a check abroad so I had to transfer it out. I hadn't used it much (the pandemic confounded my travel plans these last couple of years), and I had looked into what payment methods the IRS accepts before making this decision, just in case. I am lucky I no longer have a student loan payment coming out of there.
The good news is, my parents now know how to do international wires to me, if they ever needed to - I've occasionally done the reverse and it's not too bad.
Best wishes all.